<template>
  <div>
    <div class="editor" ref="editor" :style="styles"></div>
    <Material ref="material" visible="true" v-model="imageList" :visible.sync="imageChoice.visible" :max="5"
              clear="clear"/>
  </div>
</template>

<script>
import Quill from "~../../quill";
import Material from "../Material";
import "~../../quill/dist/quill.core.css";
import "~../../quill/dist/quill.snow.css";
import "~../../quill/dist/quill.bubble.css";
import {getToken} from "../../../utils/auth";

export default {
  name: "Editor",
  components: {Material},
  props: {
    /* 编辑器的内容 */
    value: {
      type: String,
      default: "",
    },
    /* 高度 */
    height: {
      type: Number,
      default: null,
    },
    /* 最小高度 */
    minHeight: {
      type: Number,
      default: null,
    },
    /* 只读 */
    readOnly: {
      type: Boolean,
      default: false,
    },
  },
  data() {
    return {
      headers: {
        Authorization: "Bearer " + getToken()
      },
      imageChoice: {
        focus: false,
        visible: false
      },
      imageList: [],
      Quill: null,
      currentValue: "",
      options: {
        theme: "snow",
        bounds: document.body,
        debug: "warn",
        modules: {
          // 工具栏配置
          toolbar: [
            ["bold", "italic", "underline", "strike"],        // 加粗 斜体 下划线 删除线
            ["blockquote", "code-block"],                     // 引用  代码块
            [{list: "ordered"}, {list: "bullet"}],            // 有序、无序列表
            [{indent: "-1"}, {indent: "+1"}],                 // 缩进
            [{size: ["small", false, "large", "huge"]}],      // 字体大小
            [{header: [1, 2, 3, 4, 5, 6, false]}],            // 标题
            [{color: []}, {background: []}],                  // 字体颜色、字体背景颜色
            [{align: []}],                                    // 对齐方式
            ["clean"],                                        // 清除文本格式
            ["link", "image"]                                 // 链接、图片
          ],
        },
        placeholder: "请输入内容",
        readOnly: this.readOnly,
      },
    };
  },
  computed: {
    styles() {
      let style = {};
      if (this.minHeight) {
        style.minHeight = `${this.minHeight}px`;
      }
      if (this.height) {
        style.height = `${this.height}px`;
      }
      return style;
    },
  },
  watch: {
    value: {
      handler(val) {
        if (val !== this.currentValue) {
          this.currentValue = val === null ? "" : val;
          if (this.Quill) {
            this.Quill.pasteHTML(this.currentValue);
          }
        }
      },
      immediate: true,
    },
    imageList(val, oldVal) {
      this.handleSuccess();
    },
  },
  mounted() {
    this.init();
  },
  beforeDestroy() {
    this.Quill = null;
  },
  methods: {
    init() {
      const editor = this.$refs.editor;
      this.Quill = new Quill(editor, this.options);
      // 素材模块接管上传事件
      let toolbar = this.Quill.getModule("toolbar");
      toolbar.addHandler("image", (value) => {
        this.uploadType = "image";
        if (value) {
          this.imageChoice.visible = true;
        } else {
          this.quill.format("image", false);
        }
      });
      toolbar.addHandler("video", (value) => {
        this.uploadType = "video";
        if (value) {
          this.imageChoice.visible = true;
        } else {
          this.quill.format("video", false);
        }
      });
      this.Quill.pasteHTML(this.currentValue);
      this.Quill.on("text-change", (delta, oldDelta, source) => {
        const html = this.$refs.editor.children[0].innerHTML;
        const text = this.Quill.getText();
        const quill = this.Quill;
        this.currentValue = html;
        this.$emit("input", html);
        this.$emit("on-change", {html, text, quill});
      });
      this.Quill.on("text-change", (delta, oldDelta, source) => {
        this.$emit("on-text-change", delta, oldDelta, source);
      });
      this.Quill.on("selection-change", (range, oldRange, source) => {
        this.$emit("on-selection-change", range, oldRange, source);
      });
      this.Quill.on("editor-change", (eventName, ...args) => {
        this.$emit("on-editor-change", eventName, ...args);
      });
    },
    handleSuccess() {
      if (this.imageList.length > 0) {
        // 获取富文本组件实例
        let quill = this.Quill;
        // 如果上传成功
        for (let i = 0; i < this.imageList.length; i++) {
          // 获取光标所在位置
          let length = quill.getSelection().index;
          // 插入图片  res.url为服务器返回的图片地址
          quill.insertEmbed(length, "image", this.imageList[i].materialOriginalUrl);
          // 调整光标到最后
          quill.setSelection(length + 1);
        }
        //重置imageList参数
        this.imageList = []
      }
    }
  }
};
</script>

<style>
.editor, .ql-toolbar {
  white-space: pre-wrap !important;
  line-height: normal !important;
}

.quill-img {
  display: none;
}

.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}

.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: "保存";
  padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}
</style>
